In the morning, head to Fort Kochi for a leisurely walk through the charming old streets and colonial-style buildings. Visit the Chinese Fishing Nets that line the coast and try your hand at catching fish. In the afternoon, visit the Mattancherry Palace and marvel at the impressive murals and artifacts on display. In the evening, take a sunset cruise on the backwaters and enjoy the views of the city from the water.
Spend the morning driving to Munnar and stop at the Valara Waterfalls on the way. In the afternoon, take a tour of a tea plantation and learn about the history and production of tea in the region. Then, head to the Top Station viewpoint for breathtaking views of the Western Ghats. In the evening, hang out at a local pub and enjoy some drinks and music.
In the morning, take a dip in the Papanasam Beach and explore the Varkala Cliff. Enjoy some local cuisine for lunch and then head to the Varkala Beach for some relaxation. In the evening, take a boat ride through the backwaters and watch the sunset while enjoying some drinks and snacks on board.
If you have time, consider visiting Alleppey for a houseboat cruise through the backwaters. You can also take a day trip to Thekkady to see the Periyar Wildlife Sanctuary. For maximum fun, try some water sports like surfing, parasailing, and kayaking.